Integrated quartz oscillator circuit

Details Integrated quartz oscillator circuit Integrated quartz oscillator circuit

2008-05-20

2008-05-20

Kinkead, Arnold (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S074000, C331S135000, C331S1160FE, C331S1160FE

Reexamination Certificate

active

07375600

ABSTRACT:
An integrated quartz oscillator circuit is disclosed having a capacitive voltage divider, which has a first capacitor and a second capacitor, as well as having a first transconductance amplifier, which is placed in a loop connecting a first terminal and a second terminal of the first capacitor. An input of the first transconductance amplifier is connected to a center tap between the first capacitor and the second capacitor, an output of the first transconductance amplifier is connected to the first junction of the first capacitor, and the quartz oscillator circuit has a conductive element connected parallel to the second capacitor.

REFERENCES:
patent: 4091338 (1978-05-01), Morihisa
patent: 4405906 (1983-09-01), Luscher
patent: 4560955 (1985-12-01), Sauer
patent: 6380816 (2002-04-01), Okaguchi
patent: 6606007 (2003-08-01), Washburn
patent: 0133618 (1985-03-01), None
patent: 0400425 (1990-12-01), None
Bernd Neubig et al., “Das groβe Quarzkochbuch,” © 1997 Franzis-Verlag GmbH, 85622 Feldkirchen, pp. 247-252; ISBN 3-7723-5853-5.
Benjaminson A., “A Crystal Oscillator With Bidirectional Frequency Control and Feedback ALC”, Electrical and Electronics Engineers, Proceedings of the Annual Frequency Control Symposium, 1986, New York, IEEE, US, Bd. Symp. 40, 1986, pp. 344-349.

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